A Cochrane review [Abstract] 1 included 6 studies with a total of 12 294 subjects. Two studies that assessed insecticide spray as a fly control measure found that trachoma is reduced by at least 55% to 61% with this measure compared to no intervention. One study did not find insecticide spray to be effective in reducing trachoma. One study found that another fly control measure, latrine provision, reduced trachoma by 29.5% compared to no intervention, but this was not statistically significantly difference. Another study revealed that health education on personal and household hygiene reduced the incidence of trachoma such that the odds of reducing trachoma in the health education village was about twice that of the no intervention village.
Comment: The quality of evidence is downgraded by inconsistency (heterogeneity in interventions and outcomes) and by study quality (inadequate or unclear allocation concealment).
Primary/Secondary Keywords